<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div id="app">
    {{ content }}
    <br>
    <span v-html="content"></span>
    <br>
    <span v-text="content">内容：</span>
    <br>
    <span>内容：{{ content }}</span>
  </div>

  <script src="./libs/vue.js"></script>
  <script>
    new Vue({
      el: '#app',
      data: {
        content: '<input placeholder="请输入内容" />'
      }
    })
  </script>
</body>
</html>